Update nunomaduro/larastan requirement from 2.9.2 to 2.9.6

Updates the requirements on [nunomaduro/larastan](https://github.com/larastan/larastan) to permit the latest version.
- [Release notes](https://github.com/larastan/larastan/releases)
- [Changelog](https://github.com/larastan/larastan/blob/2.x/RELEASE.md)
- [Commits](larastan/larastan@v2.9.2...v2.9.6)

---
updated-dependencies:
- dependency-name: nunomaduro/larastan
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

composer.json

@@ -20,7 +20,7 @@
     },
     "require-dev": {
         "graham-campbell/testbench": "^6.0",
-        "nunomaduro/larastan": "2.9.2",
+        "nunomaduro/larastan": "2.9.6",
         "phpstan/phpstan-mockery": "1.1.2",
         "phpunit/phpunit": "^10.0",
         "rregeer/phpunit-coverage-check": "^0.3.1",